EP 2343700 A1 20110713 - Signal decoder, signal decoding method, program, and recording medium
Title (en)
Signal decoder, signal decoding method, program, and recording medium
Title (de)
Signaldekoder, Signaldekodierungsverfahren, Programm und Aufzeichnungsmedium
Title (fr)
Décodeur de signaux, procédé de décodage de signaux, programme et support d'enregistrement
Publication
Application
Priority
- EP 06767991 A 20060707
- JP 2005198676 A 20050707
Abstract (en)
Disclosed are a decoding method and apparatus. The apparatus comprises an integer signal decoder (620) which is configured to decode an integer signal code included in coded data in each frame by using linear predictive decoding and outputs an integer signal; and an amplitude reverse adjusting section which is configured to make amplitude adjustment to the integer signal by using an amplitude adjustment amount contained in the coded data and to output an amplitude-reverse-adjusted signal. The integer signal decoder (620) comprises a sample buffer (6206) which holds at least as many last sample values in the previous frame as the number equal to an order P used in linear prediction. The integer signal decoder (620) further comprises an adjustment amount buffer (6205) which is configured to hold the amplitude adjustment amount of the previous frame; and an interframe correction section (6204) which is configured to correct an amplitude of at least last P sample values in the previous frame held in the sample buffer (6206) on the basis of an amplitude adjustment amount of the current frame.
IPC 8 full level
G10L 19/00 (2013.01); H03M 7/30 (2006.01); H03M 7/38 (2006.01); H04N 19/00 (2014.01); H04N 19/36 (2014.01); H04N 19/90 (2014.01)
CPC (source: EP US)
G10L 19/0017 (2013.01 - EP US); G10L 25/12 (2013.01 - EP US)
Citation (applicant)
- WO 2004114527 A1 20041229 - NIPPON TELEGRAPH & TELEPHONE [JP], et al
- DAI YANG, TAKEHIRO MORIYA: "Lossless Compression for Audio Data in the IEEE Floating-Point Format", AES CONVENTION PAPER 5987, AES 115TH CONVENTION, 10 October 2003 (2003-10-10)
- TILMAN LIEBCHEN, YURIY A. REZNIK: "MPEG-4 ALS: An Emerging Standard for Lossless Audio Coding", PROCEEDINGS OF THE DATA COMPRESSION CONFERENCE (DCC '04), April 2004 (2004-04-01), pages 1068 - 0314
- NOBORU HARADA ET AL.: "Proposal of CE for improved floating-point compression using ACFC (Approximate-Common-Factor Coding) in ALS (Audio Lossless Coding)", JOINT VIDEO TEAM (JVT) OF ISO/IEC MPEG & ITU-T VCEG(ISO/IEC JTC1/SC29/WG11 AND ITU-T SG16 Q6, vol. XX, XX, no. M11314, 13 October 2004 (2004-10-13), XP030040088
Citation (search report)
[AD] WO 2004114527 A1 20041229 - NIPPON TELEGRAPH & TELEPHONE [JP], et al
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1901432 A1 20080319; EP 1901432 A4 20100407; EP 1901432 B1 20111109; CN 101061638 A 20071024; CN 101061638 B 20100519; EP 2343700 A1 20110713; EP 2343700 B1 20170830; JP 4359312 B2 20091104; JP WO2007007672 A1 20090129; US 2008089438 A1 20080417; US 8050334 B2 20111101; WO 2007007672 A1 20070118
DOCDB simple family (application)
EP 06767991 A 20060707; CN 200680001242 A 20060707; EP 11162523 A 20060707; JP 2006313581 W 20060707; JP 2006543299 A 20060707; US 66649306 A 20060707